Improvement in drills



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UNITED STATES .PATENT OEEIoEc MORGAN NOTTINGHAM AND WILLIAM-DUNOAN, OF VINTON, IOWA.

IMPROVEMENT IN DRILLS.

Spccitication forming part of LettersA Patent No. 59,631, dated November 13, 1866.

To all whom it may concern Be it known that we, MORGAN NOTTINGHAM and WILLIAM DUNCAN, of Vinton, in the county of Benton and State of Iowa, have invented a new and Improved Drill; and we do hereby declare that thefollowing is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specication.

The present invention relates to a new and improved tool or drill for enlargi-ng the bore of a well at and about its lower end, which tool for this purpose is so connected to the lower end of a rod, either made in sections or in one piece, of a suficient length to reach or extend to the bottom ot' the well, thatI by rotating such rod in any proper manner the said tool will be brought to bear against the sides of the well, and, cutting the same, produce the enlargement desired, as will be obvious. from the following detail description ot' the tool, reference being had to the accompanying plate of drawings, in which- Figure l is a side elevation of our improved tool, and Fig. 2 a transverse section taken in the plane of the line .r x, Fig. l.

Similar letters of reference indicate like parts.

A in the drawings represents a solid rod or bar, to one end, B, ot' which our improved tool is connected, as will be hereinafter explained. This rod A is to be of sufficient length to reach or extend to the bottom of the well in which it is to be used, and may be either made in one piece or in sections, as may be deemed best or desirable. To this rod A, at a short distance from its lower end, B, a collar or ring, C, is secured, having lugs D upon its under side, to which are pivotedy or hung, at one end, arms E, one upon each side of the rod, and at points diametrically opposite to each other. F are arms pivoted or hung to the outer ends of the arms, of which they form a continuation, and at their other or lower ends are hung to a co1- lar or plate, G, arranged upon the rod A so as to slide up and down upon it, moving by the projecting portions a of the arms F in a vertical slot, b, of the rod A. Along the outside edge, o, of each of the arms F a knife or' cutting-blade, H, is formed or secured, which cutting-blades project in opposite directions to each other, so that as the rod A is rotated in any proper manner they will act in the same direction upon the surface with which they are brought in contact, as will be presently .explained. The extreme lower end, B, of the rod is made pointed, as shown in Fig. l.

In the use of the tool herein above explained the rodfA is first lengthened to the degree required for it to extend through the entire depth of the well, which is to be enlarged at its bottom by attaching one section after another, if made in sections, when lowering the rod into the well, until its sliding collar G rests upon the bottom of the saine. The rod is then rotated in any proper manner, at the same time bearing orpressing down upon the same, which causes the pointed end of the rod to enter the ground, thus sliding or moving the collar G upward and throwing ont the blades or cutting-arms F, bringing them to bear against the sides of t-he well, on which they act, cutting the same as they are rotated through theA rod, and consequently enlarging the bore of t-he well, as is obvious without any further explanation, whereby a reservoir, as it were, is formed at the bottom of the well, the loose earth contained in which can be removed in the operation of pumping the water from the well.

Ve claim as new and desire to secure by Letters Patent- The rod A, having iixed collar C and sliding collar G, connected together through arms E and F, with the latter, F, provided with cutting-blades H, substantially as and for the purpose described.

MORGAN NOTTINGHAM. VILLIAM DUNCAN. Witnesses:

AUSTIN KNOX, E. N. BOWEN. 

